光線調整

光線測試
不同材質在畫面上有著不同的反射系數
light testing
The different reflection factors between materials.

玻璃折射跟反射，瓷器的光線反射，水果、地板...等，期時在當初學的時候老師都有直接告訴你。個個參數是多少，直接就可使用。但以結果來說，其實蠻假的。
光線這種東西，想像中，就是光源，無論你使用點光源，或者聚光，或者遠光、天空光。
這次練習讓我回想起當初高中的時候
學物理的那段日子
"顏色，是因為物體反射某個顏色的光給你的眼球，你才看得到"這句話

In the beginning of learning 3dmax.Teachers usually give us every kinds of factors.Just like the reflection factors of mirror ,vases,fruit,floor...ect.but..be honestly,it looks like a fake.
In our imagine.The features of light are pure.No matter spot light,target light,far light and sky light.
This practicing remind me a sentence which came from the physics class in my high school time.
"You can see colors because the materials reflect it into your eyes."
 
所以我思考的重點在於
1.所有物體，彼此之間的光線反射與折射，其實是互相影響的
2.3d模型如果要更具真實感，光線，是很重要的因素

接著所得到的結論幾個方向
1.所有物體給予不同的光線條件。
2.物體之間色彩會相互影響

And than I consider about 2 key points.
1.They affects each others by reflection and refraction.
2.It's important to control light if you wonder the 3d model looks real.

And I make a short conclusion:
1.put different light conditions in each models.
2. so does the colors affect.

接著可以發現，金屬的部分，還有地板到影的部分，都比較真實了，但是卻仍然有假假的感覺

原因在於，這個模型的整體，其實只有一個250*250cm的木頭地板+一個沙發椅。
一般真實世界不會指有這兩個元素存在，就算在空的房間，也還有牆壁的影響。

Now you can see it more real than before.And what did I do are only the two conclusions I said.
However,It still not the best.

The reason is the original model  created on a 250*250cm plan and put a chair on the plan.
It's impossible in the real world.There will be four more walls even in an empty room.

那麼接下來，加了牆壁之後的這個床，元素差不多，擁有更多的真實性。但還是不夠
因為所有的木頭，布料，我都是用一樣的光線反射。再加上，一個同樣材質的物體，本身其實就有著凹凸面，進而影響表面的陰影
就牆壁來說，一整片死白的牆壁，真的很難找到。床單也是。

Next I add a wall,a bed,a painting for complete the environment.But still something wrong.
I haven't put different factors on each materials,not to mention the lumpy of their surface.

最終，雖然我還是懶得把牆壁拉出來拓墣，但盡可能的，把所有的單一物件都加上不同的光線參數。結果就是，必須稍為努力的看一下，才能找出這張照片違和感，然後判定他是假的。
當然，攝影機這一面的牆壁是沒有的，雖然這面牆壁部添加上去完全破壞了我自己的論點，不過如何一方面架設攝影機，一方面部影響模型結構，這..對我來說有點難。下次再說。

Finally,I put the different factors on each things without solving the lumpy problem.But it still looks great,doesn't it?
Of course when I set the camera.These is no wall behind the camera.This is only the personal skill problem.
Don't be to mean,please.